The question is not really asking about grammar rules.
It’s playing with how we normally speak in real life.
When something is polite, we say “politely.”
But when something is impolite…
👉 We usually don’t say “impolitely” in everyday speech.
💡 The Real Answer
When someone is impolite, we simply say:
👉 rudely
✅ Final Answer
Rudely
